Overview
The AD8339ACPZ from Analog Devices Inc. is a quad I/Q demodulator and phase shifter, designed to be driven by a low noise preamplifier with differential outputs. It is optimized for use with the AD8332, AD8334, and AD8335 family of Variable Gain Amplifiers (VGAs). This device combines continuous wave (CW) analog beamforming (ABF) and I/Q demodulation in a single, ultracompact 40-lead chip scale package, making it particularly suitable for high-density applications such as ultrasound scanners and phased array systems.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range (RF) | LF to 50 MHz |
| Frequency Range (4LO) | LF to 200 MHz |
| Baseband Frequency Range | Determined by external filtering |
| Power Consumption per Channel | 73 mW |
| Total Power Consumption | 290 mW |
| Supply Voltage | ±5 V |
| Operating Temperature Range | −40°C to +85°C |
| Package Type | 40-lead LFCSP (6 mm × 6 mm) |
| Phase Select Increments | 16 steps (22.5° per step) |
| LO Drive | >0 dBm (50 Ω), single-ended sine wave |
| Output Dynamic Range | 160 dB/Hz |
Key Features
- Quad integrated I/Q demodulator with separate RF inputs for each channel.
- 16 phase select options on each output with 22.5° increments.
- Optimized for use with AD8332, AD8334, and AD8335 VGAs.
- Continuous wave (CW) analog beamforming (ABF) and I/Q demodulation capabilities.
- Power-down feature via SPI interface for each channel and the complete chip.
- Serial interface for configuration and control.
Applications
- Medical imaging, particularly in high-density ultrasound scanners.
- Phased array systems.
- Radar systems.
- Adaptive antennas.
- Communication receivers.
Q & A
- Q: What is the primary function of the AD8339ACPZ?
A: The AD8339ACPZ is a quad I/Q demodulator and phase shifter, combining CW analog beamforming and I/Q demodulation. - Q: What is the frequency range for the RF input?
A: The RF input frequency range is from LF to 50 MHz. - Q: How many phase select options are available for each channel?
A: There are 16 phase select options with 22.5° increments for each channel. - Q: What is the power consumption per channel?
A: The power consumption per channel is 73 mW, with a total power consumption of 290 mW. - Q: What is the operating temperature range for the AD8339ACPZ?
A: The operating temperature range is from −40°C to +85°C. - Q: What type of package does the AD8339ACPZ come in?
A: The AD8339ACPZ comes in a 40-lead LFCSP package (6 mm × 6 mm). - Q: Can the AD8339ACPZ be powered down?
A: Yes, the AD8339ACPZ can be powered down via the SPI interface for each channel and the complete chip. - Q: What are some of the key applications for the AD8339ACPZ?
A: Key applications include medical imaging, phased array systems, radar, adaptive antennas, and communication receivers. - Q: Is the AD8339ACPZ optimized for use with any specific amplifiers?
A: Yes, it is optimized for use with the AD8332, AD8334, and AD8335 family of VGAs. - Q: What is the LO drive requirement for the AD8339ACPZ?
A: The LO drive requirement is >0 dBm (50 Ω), single-ended sine wave.
